English

Numeral

eighty-first

1. (ordinal) The ordinal form of the number eighty-one, describing a person or thing in position number 81 of a sequence.

   The answer appears on the eighty-first page of the book.

   She finished eighty-first in the race.

Usage notes

English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.

Abbreviations

• 81st, 81^st

Translations

Noun

eighty-first ‎(plural eighty-firsts)

1. (fractional) One of eighty-one equal parts of a whole.

   An eighty-first of 1620 is 20.

Translations